sntp protocol

2. Telnet protocolThe Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main way of Internet remote Login service. It provides users with the ability to perform remote host work on the local computer. Use a Telnet program (such as Putty) on the end user's computer to connect to the server. End users can enter commands in t

http://blog.csdn.net/heanyu/article/details/6202500 RTP (Real time Transport Protocol) RTP is a transport protocol for multimedia traffic on the Internet that is published by the IETF (Internet Engineering Task Force) as RFC1889 . RTP is defined as a one-to-many transmission, with the purpose of providing time information and implementing stream synchronization. Typical applications for RTP are built on U

2017-02-10 reliable data transmission principle, reliable data transmission protocol, automatic retransmission request protocol, stop and wait protocol, redundant packet, bit alternation Protocol, sliding window protocol "Computer network-Top Down Method" (original book 6th

2017-02-11 structure reliable data transmission protocol, Sliding window protocol, bit alternation protocol, fallback N-Step protocol, and select retransmission protocol 1: Redundant data duplicate (packet), 2: Inverted count timer (countdown timer), 3: Bit alternating

Label:IMAP (Internet Mail access protocol,internet) is formerly known as the Interactive Mail Access Protocol (Interactive mail, Access Protocol). IMAP was an email acquisition protocol developed by Stanford University in 1986. Its main role is that the mail client (for example, Ms Outlook Express) can obtain mail info

Both TCP and UDP are port-based protocols. TCP has links, and UDP has no links. The TCP protocol also drops packets (network problems, the data may be gone)The application is sent to the operating system's cache, and the operating system is removed from the cache, and once the data is lost, it is completely gone. TCP is reliable because the data in its own cache is emptied after it receives a confirmation message.How UDP works I took it out of my own

Commands and responses to the SMTP protocol From the previous communication model, you can see that the SMTP protocol's session between sending SMTP and receiving SMTP is done by sending SMTP commands and receiving an answer to SMTP feedback. After the communication link is established, Send SMTP send mail command message sender, if receive SMTP at this time can receive mail then make OK answer, and then send SMTP continue to Issue RCPT command to con

RTP (Real Time Transport Protocol) RTP is a transmission protocol for multimedia data streams over the Internet.Rfc1889Release. RTP is defined to work during one-to-one or one-to-many transmission. It aims to provide time information and implement stream synchronization. Typical RTP applications are built on UDP, but can also work on TCP, ATM, and other protocols. RTP itself only guarantees the transmissio

The IP protocol is the most important protocol in the family of TCP/IP protocols, which provides unreliable, non-connected datagram transport services. So understanding IP protocols is critical to our learning network.IP headerImportant Field Introduction：4bit First ministerial degree: in 4 bytes, determines the IP head of the largest minister of 15*4=60, the general IP datagram header length of 20, at this

The purpose of blogging is to simply keep track of the problems that you have encountered while learning the Python web programming book, as well as the changes that the book code cannot run in python3.5.I hope other friends who study this book will

Video image transmission has the following characteristics: 1 requirements for small transmission delay, high real-time, 2 transmission flow, requiring high transmission efficiency; 3 allow transmission errors or data loss on certain programs. According to the above characteristics, it is more ideal to use UDP protocol to transmit video relative to TCP protocol. UDP is the abbreviation of User Datagram

Mobile device Management (MDM) and OMA (OTA) DM Protocol Wizard (ii)--WAP Protocol (1)On the "Mobile Device Management (MDM) and OMA (OTA) DM Protocol Wizard (i)"16. Can I access WiMAX devices directly from the Web server?See "WAP Protocol (1)--6th WAP Network Deployment" in this article17. Can I use TCP instead of WDP

First, the introduction The Protocol deals with properties and methods that act like abstract classes in Java, and the types in swift implement agreed properties and methods by complying with the protocol. The protocols in Swift are declared using the Protocol keyword. The protocol in Swift also has a very interesting

Redis Communication Protocol (protocol) This document is translated from: Http://redis.io/topics/protocol. The Redis protocol compromises between the following three goals: ease of implementation can be efficiently analyzed by computer (parse) can easily be read by humans to understand the network layer The client and

The web point-to-point program transmits data, is the HTTP protocol or TCP/IP protocol TCP/IP protocol and HTTP protocol what is the difference, two Web program point-to-point transmission data, you will choose that one. Today on the Internet to see such an interview topic, triggered a series of search data, review

Let's look at the three-segment code:Index.html:Copy CodeCopy CodeIndex.js:Import * as Circle from './test ';Console.log (' Circle area: ' + Circle.area (4));Console.log (' circumference length: ' + circle.circumference (14));Test.js:Copy CodeExport function Area (RADIUS = 5) {return Math.PI radius radius;}Export function circumference (radius = 5) {Return 2 math.pi radius;}Copy CodeUse is lucky 28 source download Dashengba.com "Holy Source Forum" enterprise-e 3266397597 module syntax, but throu

TPC/IP Protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data. regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand: "When we transmit

The similarities and differences between RTSP, RTMP, and HTTPCommon:1:RTSP RTMP HTTP is applied at the application layer.2: Theoretically RTSP rtmphttp can do live and on-demand, but generally do live with RTSP RTMP, do on-demand http. Video conferencing when the original SIP protocol, and now basically replaced by the RTMP protocol.Difference:1:http: Hypertext Transfer Protocol (FTP is a file Transfer

Software download for analysis: Wireshark-win32-1.10.2.exeRead the guided Tour1. Analyze and apply the ARP protocol2. Analyzing IP Protocols3. Analyzing the ICMP protocol1. Analysis of the format and content of ARP messages(1) The ARP request message of ping 172.18.3.132:000108000604000100e04c512ae8ac12038e000000000000ac120384Physical network Type hardware type:0001-ethernet (1)Protocol type Protocol TYPE:0

Reprint: http://easydarwin.org/article/Streaming/141.htmlThe similarities and differences between RTSP, RTMP, and HTTPCommon:1:RTSP RTMP HTTP is applied at the application layer.2: Theoretically RTSP rtmphttp can do live and on-demand, but generally do live with RTSP RTMP, do on-demand http. Video conferencing when the original SIP protocol, and now basically replaced by the RTMP protocol.Difference:1:http: Hypertext Transfer